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I know it's dead here now but has anyone successfully used OWS in DNN 8+?
I just installed OWS 2.2.21 in a new DNN 8.0.4 and it's not working.

No errors during install. But when using, a critical error and:

Message:Value cannot be null. Parameter name: connectionString

StackTrace:

InnerMessage:Value cannot be null. Parameter name: connectionString

InnerStackTrace:

at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteDataset(String connectionString, String spName, Object[] parameterValues) at r2i.OWS.SqlDataProvider.GetConfigurationList() at r2i.OWS.Controller.GetConfigurationDictionaryList() at r2i.OWS.Wrapper.DNN.installerDnn.GetConfigList() at r2i.OWS.Wrapper.DNN.installerDnn.Page_Load(Object sender, EventArgs e) at System.Web.UI.Control.OnLoad(EventArgs e) at DotNetNuke.Entities.Modules.PortalModuleBase.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)